Salva Bará
@salvabara.bsky.social
Physicist. Light pollution researcher - Former Prof. Titular at Univ. de Santiago de Compostela, Galiza (European Union)
https://salvabara.blogspot.com/
https://salvabara.blogspot.com/
#OTD in 1957, the URSS Sputnik 1 satellite reached a low Earth orbit. After that, a series of milestones in space exploration amazed the world.
(image credit: unknown to me, if you have any clue please let me know)
(image credit: unknown to me, if you have any clue please let me know)
October 4, 2025 at 1:08 PM
#OTD in 1957, the URSS Sputnik 1 satellite reached a low Earth orbit. After that, a series of milestones in space exploration amazed the world.
(image credit: unknown to me, if you have any clue please let me know)
(image credit: unknown to me, if you have any clue please let me know)
September 19, 2025 at 2:28 PM
September 17, 2025 at 5:30 PM
Light pollution is particularly important in the Special Bird Protection Areas of the Natura Network. MITECO has opened a consultation process on the marine ZEPAs under its jurisdiction (until this Monday, Sept. 15th): www.miteco.gob.es/es/biodivers...
September 13, 2025 at 5:38 PM
Light pollution is particularly important in the Special Bird Protection Areas of the Natura Network. MITECO has opened a consultation process on the marine ZEPAs under its jurisdiction (until this Monday, Sept. 15th): www.miteco.gob.es/es/biodivers...
A contaminación luminosa é particularmente importante nas Zonas de Especial Protección de Aves da Rede Natura. O MITECO ten aberto un proceso de consulta sobre as ZEPA mariñas da súa competencia (até este luns día 15): www.miteco.gob.es/es/biodivers...
September 13, 2025 at 4:35 PM
A contaminación luminosa é particularmente importante nas Zonas de Especial Protección de Aves da Rede Natura. O MITECO ten aberto un proceso de consulta sobre as ZEPA mariñas da súa competencia (até este luns día 15): www.miteco.gob.es/es/biodivers...
O acendido das luces urbanas en Pontevedra e A Coruña, medido polos detectores da Rede de Monitorización do Brillo do Ceo de @MeteoGalicia logo do apagamento masivo do día de onte (noite sen Lúa). Menor valor do sinal -> maior brillo do ceo.
April 29, 2025 at 11:32 AM
O acendido das luces urbanas en Pontevedra e A Coruña, medido polos detectores da Rede de Monitorización do Brillo do Ceo de @MeteoGalicia logo do apagamento masivo do día de onte (noite sen Lúa). Menor valor do sinal -> maior brillo do ceo.
In order to reduce light pollution we have to reduce the overall amount of artificial light emissions
Less than 1 photon out of every 22 million reflected in urban surfaces is used for vision (per observer)
In: Reducing artificial light emissions and monitoring compliance
arxiv.org/abs/2503.02724
Less than 1 photon out of every 22 million reflected in urban surfaces is used for vision (per observer)
In: Reducing artificial light emissions and monitoring compliance
arxiv.org/abs/2503.02724
April 26, 2025 at 4:14 PM
In order to reduce light pollution we have to reduce the overall amount of artificial light emissions
Less than 1 photon out of every 22 million reflected in urban surfaces is used for vision (per observer)
In: Reducing artificial light emissions and monitoring compliance
arxiv.org/abs/2503.02724
Less than 1 photon out of every 22 million reflected in urban surfaces is used for vision (per observer)
In: Reducing artificial light emissions and monitoring compliance
arxiv.org/abs/2503.02724
Non había Lúa a noite do 15 de abril na que se perdeu o Titanic... Dous días despois a Lúa eclipsaría o Sol nas terras de Valdeorras, fenómeno estudado por astrónomos de moitos países incluíndo a expedición catalá dirixida por J. Comas i Solà.
Máis info en
drive.google.com/file/d/1JOvO...
Máis info en
drive.google.com/file/d/1JOvO...
April 15, 2025 at 8:45 PM
Non había Lúa a noite do 15 de abril na que se perdeu o Titanic... Dous días despois a Lúa eclipsaría o Sol nas terras de Valdeorras, fenómeno estudado por astrónomos de moitos países incluíndo a expedición catalá dirixida por J. Comas i Solà.
Máis info en
drive.google.com/file/d/1JOvO...
Máis info en
drive.google.com/file/d/1JOvO...
This is how pedestrian crossings in a Galician city are indicated. And yes, they blind at night as much as it seems, impairing especially the elderly's vision. How much sanity has been lost since Sesame Street hasn't aired...
January 25, 2025 at 3:29 PM
This is how pedestrian crossings in a Galician city are indicated. And yes, they blind at night as much as it seems, impairing especially the elderly's vision. How much sanity has been lost since Sesame Street hasn't aired...
Wind farms and light pollution:
Medium-intensity turbine lights can be brighter than the brightest stars and planets on the night sky up to significant distances. This should be taken into account in environmental impact assessments.
Version of record, open access: doi.org/10.1016/j.jq...
Medium-intensity turbine lights can be brighter than the brightest stars and planets on the night sky up to significant distances. This should be taken into account in environmental impact assessments.
Version of record, open access: doi.org/10.1016/j.jq...
October 1, 2024 at 5:17 PM
Wind farms and light pollution:
Medium-intensity turbine lights can be brighter than the brightest stars and planets on the night sky up to significant distances. This should be taken into account in environmental impact assessments.
Version of record, open access: doi.org/10.1016/j.jq...
Medium-intensity turbine lights can be brighter than the brightest stars and planets on the night sky up to significant distances. This should be taken into account in environmental impact assessments.
Version of record, open access: doi.org/10.1016/j.jq...
These are the locations of the 35 night sky brightness sensors of @MeteoGalicia, the Galician Meteorology Public Agency. One of the first and denser networks worldwide monitoring light pollution every minute, all nights of the year. Open data in www.meteogalicia.gal/web/ica/bril...
September 27, 2024 at 5:51 PM
These are the locations of the 35 night sky brightness sensors of @MeteoGalicia, the Galician Meteorology Public Agency. One of the first and denser networks worldwide monitoring light pollution every minute, all nights of the year. Open data in www.meteogalicia.gal/web/ica/bril...
Estas son as localizacións dos 35 sensores para medir o brillo do ceo nocturno de MeteoGalicia. Unha das primeiras e máis densas redes de monitorización da contaminación luminosa, hoxe habituais en moitos países no mundo. Datos dispoñibles en www.meteogalicia.gal/web/ica/bril...
September 27, 2024 at 5:50 PM
Estas son as localizacións dos 35 sensores para medir o brillo do ceo nocturno de MeteoGalicia. Unha das primeiras e máis densas redes de monitorización da contaminación luminosa, hoxe habituais en moitos países no mundo. Datos dispoñibles en www.meteogalicia.gal/web/ica/bril...